DP83848HSQ National Semiconductor, DP83848HSQ Datasheet - Page 56

• Manufacturer Part Number: DP83848HSQ
• Description: IC, TRANSCEIVER, ENET PHYTER, 40LLP
• Manufacturer: National Semiconductor

Specifications of DP83848HSQ

• Data Rate: 100Mbps
• No. Of Ports: 1
• Ethernet Type: IEEE 802.3u
• Supply Current: 92mA
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -40°C To +125°C
• Digital Ic Case Style: LLP
• No. Of: RoHS Compliant
• Interface Type: MII Serial, RMII
• Rohs Compliant: Yes

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7.2.8 10Base-T Status/Control Register (10BTSCR)
14:12
11:9
Bit
15
8
7
6
5
4
3
2
1
0
LOOPBACK_10_D
HEARTBEAT_DIS
FORCE_LINK_10
JABBER_DIS
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
POLARITY
SQUELCH
Bit Name
LP_DIS
IS
Table 28. 10Base-T Status/Control Register (10BTSCR), address 0x1A
100, RW
Default
RO/LH
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
1, RW
0, RW
0, RW
RESERVED:
Must be zero.
RESERVED:
Must be zero.
Squelch Configuration:
Used to set the Squelch ‘ON’ threshold for the receiver.
Default Squelch ON is 330mV peak.
data to the Receive data in addition to transmitting the data on the
physical medium. This is for consistency with earlier 10BASE2 and
10BASE5 implementations which used a shared medium. Setting
this bit disables the loopback function.
This bit does not affect loopback due to setting BMCR[14].
Normal Link Pulse Disable:
1 = Transmission of NLPs is disabled.
0 = Transmission of NLPs is enabled.
Force 10Mb Good Link:
1 = Forced Good 10Mb Link.
0 = Normal Link Status.
RESERVED:
Must be zero.
10Mb Polarity Status:
This bit is a duplication of bit 12 in the PHYSTS register. Both bits
will be cleared upon a read of 10BTSCR register, but not upon a
read of the PHYSTS register.
1 = Inverted Polarity detected.
0 = Correct Polarity detected.
RESERVED:
Must be zero.
RESERVED:
Must be set to one.
Heartbeat Disable: This bit only has influence in half-duplex 10Mb
mode.
1 = Heartbeat function disabled.
0 = Heartbeat function enabled.
When the device is operating at 100Mb or configured for full
duplex operation, this bit will be ignored - the heartbeat func-
tion is disabled.
Jabber Disable:
Applicable only in 10BASE-T.
1 = Jabber function disabled.
0 = Jabber function enabled.
In half-duplex mode, default 10BASE-T operation loops Transmit
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Description